61% (2012)

63% (1974)

66% (1976)

63% (1975)

65% (1971)

50% (1977)

64% (1968)

21% (1979)

60% (1973)

52% (1996)

62% (1977)

30% (1973)

58% (1973)

0% (1979)

67% (1973)

40% (1981)

64% (2005)

65% (1974)

45% (2005)

64% (1969)